a. One that trims: a window trimmer.
b. A device or machine, such as a lumber trimmer, that is used for trimming.
2. One who changes one's opinions, especially in politics, to suit the needs of the moment.
3. Electronics A variable component used to make fine adjustments to capacity or resistance.
4. Architecture A beam across an opening, such as a hearth, into which the ends of joists can be fitted.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.